Abstract: The present invention relates to a diamine compound, a method of preparing the same, and a composition containing the same. The diamine compound of the present invention may be very usefully used as a monomer used to produce a polyimide film having excellent heat resistance and improved transparency and coefficient of thermal expansion.

Abstract: Provided is a hard coating film. The hard coating film includes a base layer and a hard coating layer disposed on the base layer and having a pencil hardness of 4H or higher. A surface elongation at break of the hard coating film falls within a predetermined range, as measured by a certain method. The hard coating film shows excellent durability under high-temperature/high-humidity conditions, has no microcracks formed after repeated folding, and shows excellent pencil hardness.

Abstract: The present invention relates to a new window cover film protecting a flexible display panel. Specifically, provided is a window cover film protecting a surface of a display device, the window cover film including a protective film formed on a base layer or a hard coating layer of a hard coating film having the base layer and the hard coating layer, and having no problem that the window cover film cannot be used as a display window cover film because a part of the protective film is not peeled off due to static electricity generated in the protective film, the base layer, or the hard coating layer when the protective film is peeled off, and the protective film remains on the base layer or a hard coating layer or the hard coating layer is partially or entirely peeled off.

Abstract: The present invention relates to a process of converting carbon dioxide using a combination of a carbon dioxide mineralization and the metabolism of sulfur-oxidizing microorganisms. According to the process, a carbonate produced in the carbon dioxide mineralization reaction can be converted to a useful substance without supplying an external additional energy source (light, electrical energy, etc.) and mineral resources (metal ions). In addition, the process can be continuously performed by recycling metal ions necessary for the carbon dioxide mineralization reaction.

Abstract: The present invention relates to: a porous composite separator for a secondary battery including a porous substrate, and a coating layer formed on the porous substrate, wherein the coating layer has a plurality of inorganic particles, which are connected and fixed by a composite binder including a particulate polymer binder and an interpenetrating polymer network (IPN)-type binder having no melting point and having a thermal decomposition temperature of 300° C. or higher; and a lithium secondary battery including the same.

Abstract: Provided are a polyimide-based film, a window cover film, and a display device including the same. In detail, provided is a polyimide-based film whose solubility in an ethyl cellosolve solvent satisfies the following Equation 1: ( FW 1 - FW 2 ) FW 1 × 100 ? 50 ? % [ Equation ? ? 1 ] wherein FW1 is a weight of an initial film before being immersed in a solvent, and FW2 is a weight of the film measured after the film is immersed in an ethyl cellosolve solvent, left at 60° C. for 2 hours, and cooled to room temperature, the solvent is removed, and the film is dried at 80° C. for 4 hours.

Abstract: The present invention is to provide a touch sensor with a fingerprint sensor capable of making brightness uniform by removing a difference in brightness in a portion to which a touch sensor and the fingerprint sensor are applied, in which an output of a touch display device of uniform brightness may be obtained by applying dummy electrodes to a portion constituting the touch sensor to change a structure so that light transmittances of the fingerprint sensor and the touch sensor are the same as or similar to each other or controlling a portion at which the finger sensor is positioned in an entire region of a light emitting layer to be brighter than the rest portion by a control unit of touch display devices to which the fingerprint sensor according to various embodiments of the present invention is applied.

Abstract: In a method for regenerating a lithium precursor, a lithium-containing waste mixture is put into a reactor. An inside of the reactor is replaced with carbon dioxide. Temperature raising treatment is performed on the lithium-containing waste mixture and the carbon dioxide to produce lithium carbonate and a transition metal-containing mixture. The lithium precursor may be recovered with high yield and high efficiency through dry treatment using carbon dioxide.

Abstract: Provided are a transparent film, an optical material including the same, and a display device including the same.

Abstract: Provided are a method of producing a lubricating base oil composition including a) reacting at least a part of waste plastic pyrolysis oil having a boiling point in a range higher than 340° C. to remove impurities and structurally isomerizing the oil; and b) hydroisomerizing at least a part of the product of step a), and a lubricating base oil composition produced therefrom. A lubricating base oil, which has more methyl branches than petroleum-based lubricating base oil, to have improved low-temperature properties may be provided.

Abstract: Provided is a technology to convert an oil having a high content of Cl into a solvent. Impurities such as Cl, S, N, and metals are removed from an oil having a boiling point of 340° C. or lower in a waste oil having a high content of Cl, and hydrogenation is carried out to recover an oil, and the oil may be applied as a solvent. Separation by boiling points to meet the properties of the solvent product is performed, a solid acid material and an oil having a high Cl content are mixed, impurities are removed by a heat treatment at a high temperature, and hydrogenation is carried out with a metal oxide catalyst, thereby manufacturing a solvent product.

Abstract: Disclosed are a method and apparatus for estimating S-wave velocities by learning well logs, whereby the method includes a model formation step of forming an S-wave estimation model to output S-wave velocities corresponding to measured depth when the well logs are input based on train data sets including train data having values of multiple factors included in the well logs, the values being arranged corresponding to measured depth, and label data having S-wave velocities corresponding to measured depth as answers, and an S-wave velocity estimation step of inputting unseen data having values of multiple factors included in well logs acquired from a well at which S-wave velocities are to be estimated, the values being arranged corresponding to measured depth, to the S-wave estimation model to estimate S-wave velocities corresponding to measured depth.

Abstract: The present invention relates to a separator, a method of manufacturing the separator, and an electrochemical device including the separator. An embodiment of the present invention may provide a separator including: a porous substrate; an inorganic particle layer provided on at least one surface of the porous substrate; and a heat fusion layer provided on at least one surface of the inorganic particle layer, wherein a surface gloss value at 60° C. of a surface of the heat fusion layer is 10 GU or more.

Abstract: Provided are a composition for forming a polyimide film for a cover window which may satisfy performance required for an advanced cover window, a method for preparing the same, and a use thereof. According to an implementation, a polyimide film for a cover window, which has excellent visibility without optical stain while colorless and transparent optical properties were not deteriorated and has excellent heat resistance and mechanical properties, and thus, is for use in optical applications, may be provided. In addition, a polyimide film for a cover window according to an implementation may be useful in various display devices.

Abstract: Disclosed are a process and system that are capable of performing selective hydrogenation on aromatic fractions by configuring a catalyst bed through staged loading of a plurality of hydrogenation catalysts with different catalytic properties, or configuring a catalyst system in which a plurality of hydrogenation catalysts are arranged using a plurality of reactors in such a way as to be equivalent with the staged loading, and as a result, are capable of suppressing aromatic loss while improving the selective removal of unsaturated hydrocarbons in the aromatic fraction and durability compared to the case of using a single catalyst.

Abstract: An embodiment relates to a polyimide based film for a cover window that may satisfy required performance of an advanced cover window, and a use thereof, and the polyimide based film for a cover window according to the embodiment has excellent visibility without optical stains without deterioration in colorless and transparent optical physical properties, and excellent heat resistance and mechanical physical properties, and thus, may be usefully used for optical applications or the purpose of replacing existing tempered glass. In addition, the polyimide based film for a cover window according to an embodiment may be usefully used in a multilayer structure and a display device.

Abstract: Provided are a glass substrate multilayer structure including a glass substrate; a polyimide-based shatter-proof layer formed on one surface of the glass substrate; and a hard coating layer formed on the polyimide-based shatter-proof layer. The polyimide-based shatter-proof layer has a thickness of 5 to 50 ?m, the hard coating layer has a thickness of 5 to 20 ?m, and the glass substrate multilayer structure has a retardation in a thickness direction (Rth) of 200 nm or less. A method for manufacturing the glass substrate multilayer structure, and a display panel including the glass substrate multilayer structure are also provided.

Abstract: The present invention relates to an optical laminate and a flexible display panel including the same, and more particularly, to an optical laminate including a self-restoration barrier adhesive layer and a flexible display panel including the same.

Abstract: Provided is a method of producing naphtha from mixed plastic, the method including the following steps: (a) subjecting the mixed plastic to thermal pyrolysis; (b) separating a product produced in the thermal pyrolysis into first oil having a boiling point of lower than 150° C. and second oil having a boiling point higher than that of the first oil; and (c) subjecting the second oil to catalytic pyrolysis.

Abstract: The present invention relates to a synthetic promoter capable of controlling the expression of a target gene at various locations in the genome of an acid-resistant strain, and more particularly to a synthetic promoter including a core promoter derived from an acid-resistant strain and an upstream activating sequence (UAS) element serving as an enhancer. When the present invention is applied to a variety of genetic and metabolic engineering techniques for acid-resistant yeast, various metabolic networks can be configured as desired while controlling the expression level of the target gene, so a method of producing various metabolites using acid-resistant yeast is provided, and the cost of producing the metabolites can be greatly reduced depending on the properties of the acid-resistant yeast.